jerryshao opened a new issue, #12716:
URL: https://github.com/apache/gravitino/issues/12716
### Describe the subtask
`JobExecutor`
(`core/src/main/java/org/apache/gravitino/connector/job/JobExecutor.java`)
exposes only `submitJob`/`getJobStatus`/`cancelJob` — there is no way to
retrieve a job's stdout/stderr. Callers (and the REST API) have no way to see
job output for debugging failed or running jobs.
**Proposed change:**
- Add output-log retrieval to `JobExecutor` (default method throwing
`UnsupportedOperationException`, so existing implementers aren't broken),
following the same backward-compatible default-method pattern used for
`queuedAt`/`startedAt`/`finishedAt`.
- Implement it for the built-in executors that can support it (e.g. the
local runner) by surfacing captured stdout/stderr.
- Expose it through `JobHandle` (Java + Python), the REST `Job` payload
(`docs/open-api/jobs.yaml`), and the Java/Python client APIs.
- Follows the same cross-cutting pattern as commit `62c5a2f2b` ("Expose job
queuedAt and startedAt across the public surface"), which touched the identical
set of layers for a different new field.
### Parent issue
#12667
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